2034 search results - page 6 / 407 » Substring Selectivity Estimation |
ICC
2008
IEEE
2008
IEEE
Data-Aided Joint Estimation of Carrier Frequency Offset and Frequency-Selective Time-Varying Channel
14 years 1 months ago
—The issue of data-aided joint carrier frequency offset (CFO) and channel estimation is investigated in the presence of a rapidly time-varying frequency-selective channel. We der...
ICC
2007
IEEE
14 years 1 months ago
2007
IEEE
— This paper addresses soft estimation of time-varying frequency selective channels using Kalman smoothing. The proposed estimator uses soft extrinsic information provided by a c...
ICDE
1999
IEEE
14 years 8 months ago
1999
IEEE
CIKM
2011
Springer
12 years 7 months ago
2011
Springer
A fundamental problem related to RDF query processing is selectivity estimation, which is crucial to query optimization for determining a join order of RDF triple patterns. In thi...
ICDE
2004
IEEE
14 years 8 months ago
2004
IEEE
Queries with (equality or LIKE) selection predicates over string attributes are widely used in relational databases. However, state-of-the-art techniques for estimating selectivit...